This microscope dates from the 1980s and is an excellent zoom stereo instrument. I am considering replacing the lamps with LED illumination, as the present filament lamps generate a lot of heat. There is a swing-in IR filter for the surface illumination. I have, however, fitted a home-built LED ringlight made from a car headlamp LED ring:
This has a home-built housing made from black polystyrene plastic card. It is a push fit into the Wild M8 objective.
It provides very even vertical illumination.
If you came to this page directly you may wish to reload the site: